He's not wrong.
Peak Pep (2011) were only a bit better than Madrid's first season under Jose.
From 4 Clasicos in 14 days, each side won once. And Barca's sole win was due to a nonexistent red card, after a dive by Alves, that folks like Rio called him out for it.
United in 2011, though got to the CL final, were way inferior than both Barca and Madrid. But fans don't want to hear it. They reached the final thanks to a kind draw.
And that Madrid side (2011 or even 2012) was a pretty one dimensional team, and not very good at big matches. Midfield was a glaring weakness, they had literally no press-resistance.
Madrid under Zizou, esp the midfield, was far more flexible, way more mature, and much much better at handling tough situations.
Casemiro >> Khedira
Kroos > Alonso
Modric >> Ozil
If Madrid in 2011 and 2012 could almost go toe to toe with peak Barca, a much better Madrid would have probably got the upper hand.
But these two sides never played each other.